littlevgl的控件父对象可以是img类型

Posted 2022-09-03 我不是萧海哇

static lv_obj_t* create_bgimg(lv_obj_t* parent)
 
  //为主窗口创建背景图像
  lv_obj_t* img = lv_img_create(parent, NULL);
  lv_obj_set_size(img, lv_obj_get_width(parent), lv_obj_get_height(parent));
  
  lv_img_set_src(img, "/screen.png"/*&img_screen*/);
  return img;

lv_obj_t* img_body = create_bgimg(lv_scr_act());
  lv_obj_t* btn1 = lv_btn_create(img_body, NULL); /* 创建按钮 */
  lv_obj_set_size(btn1, lv_obj_get_width(img_body), lv_obj_get_height(img_body));

方法二：

  lv_obj_t* btn2 = lv_btn_create(lv_scr_act(), NULL); /* 创建按钮 */
  lv_obj_set_size(btn2, 100,30);
  lv_obj_set_pos(btn2, 100, 60);